Method, device and system for forming adaptive beam

An adaptive beam and adaptive filtering technology, applied in the field of noise reduction, can solve problems such as voice damage, achieve high practicability, good noise suppression performance, and avoid voice damage

Active Publication Date: 2019-04-12
MOBVOI INFORMATION TECH CO LTD
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  • Abstract
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  • Application Information

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Problems solved by technology

[0005] In view of this, the embodiments of the present invention provide an adaptive beamforming method, device, electronic equipment, and storage medium, which can we

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  • Method, device and system for forming adaptive beam
  • Method, device and system for forming adaptive beam
  • Method, device and system for forming adaptive beam

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Embodiment Construction

[0040] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0041] Figure 1A It is a flow chart of an adaptive beamforming method provided by the embodiment of the present invention. This embodiment is applicable to the case of performing filtering operations on beams. The method can be performed by an adaptive beamforming device, which can use software and And / or implemented in the form of hardware, the apparatus may be configured in an electronic device with a filtering function, for exam...

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Abstract

Embodiments of the invention disclose a method and a device for forming an adaptive beam, equipment and a storage medium. The method comprises the following steps: acquiring a sound source direction and an audio stage at a current moment; determining a filter weight coefficient, a desired signal and a reference signal at the current moment; calculating according to a regularized adaptive filteringalgorithm or a traditional adaptive filtering algorithm of a cost function to obtain the filter weight coefficient of a next moment, or using the filter weight coefficient of the current moment as the filter weight coefficient of the next moment; and filtering an audio signal of the next moment based on the filter weight coefficient of the current moment. With adoption of a technical solution provided by embodiments of the invention, two adaptive algorithms with different noise suppression performances are combined according to sound source information are combined to obtain different filterweight coefficients for further filtering the audio signal, thereby solving a problem of directional voice damage while ensuring excellent nondirectional noise suppression performance, and improving robustness of the method for forming the adaptive beam.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of noise reduction, and in particular, to an adaptive beamforming method, device and system. Background technique [0002] With the rapid development of electronic interference theory and technology, electronic interference poses a serious threat to radar and other equipment, and adaptive beamforming technology can effectively reduce this interference. Therefore, the research on adaptive beamforming technology is of great significance . [0003] In the existing adaptive beamforming algorithm, for example, using the minimum variance undistorted response and adding the linear constraint minimum variance and other methods, some filtering algorithms are often combined in the filtering stage to achieve the purpose of suppressing noise. In some improvement schemes, for example, using an algorithm based on matrix subspace decomposition, after adding constraints to the algorithm itself, after ...

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Application Information

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IPC IPC(8): G10L21/0216
CPCG10L21/0216G10L2021/02166
Inventor 李楠
Owner MOBVOI INFORMATION TECH CO LTD
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